Pressure regulator



March 25, 1924.;

v A. F. JENKINS PRESSURE REGULATOR Filed April 9, 1920 M 319 em wam flm a? r m M w W 1. i M? M 0 V Y J /:1 i. x A. W 3 a a 2 1 W 9 4 5 v, 1 w flex m 1 fl w 1 a F L 4 4 w 0f the dia idler. 25, 312%..

metres sta rs earner orator.

AL FREDICK JEIN'S, OF BALTMUBE, t i

PR EEGULATQR.

Application filed April 6,

To all whom it may concern:

Be it known that T, ALEXANDER FREDERICK JENKINS, a citizen of the United States of America, residing in the city of Baltimore, State of Maryland, have invented certain new and useful Improvements in Pressure Regulators, of which the following is a specification.

The majority of pressure regulators now on the market are expensive to manufacture and maintain, and otherwise undesirable on account of their bulk, complication of detail and inconvenient arrangement. Such re ulators have a large number of arts which are more or less inaccessible, di cult to adjust and subject to many mechanical diificulties.

The object of the present invention is to produce a regulator which is comparatively simple in construction, having fewer parts and adapted to more compact arrangement and permanence, and greater exactness and stability of adjustment than those hitherto in use.

In the accompanying drawing, I have illustrated a preferred and modified form of regulator constructed in accordance with my invention.

In thesedrawings: Figure 1 is a vertical axial section of the preferred form of regulator.

Figure 2 is a section on line 2, 2 of Figure 1.

Fi ure 3 is a plan of the regulator with the d iaphragm cap removed. Referring to the drawings: The regulator consists of a body portion 1, having a high pressure chamber, 2, and a diaphragm chamber, 3, the latter includ ing a low ressure chamber, 4, on one side ragm. 7 The y portion, 1, as shown, consists of three members or sections, 6, 7 and 8. The upper section or diaphragm cap, 8, is in the form of a hollow cylinder, having a circular flange, 9, at the lower end, b means of which it is secured to the top 0 the middle section, 7, which latter has a shallow, central depression or chamber, 10, which forms the low pressure chamber.

' The diaphragm, 11, which divides the diaphragm c amber, 3, into the low pressure chamber. a, and the spring chamber 12, be-

ieae. Serial No. are ice.

ing of greater area than the cross section of the chamber, is clamped between the two members, 7 and 8, where the two parts are 'secured together by means of screws, 70.

The sections or members, 6 and 7, have aligned registering cavities, 14 and 15, which as shown are also in alignment with the spring chamber, 12, and low pressure chamber, 4, and together form the high pressure chamber, 2. The lower body member, 6, has a passage, 16, shown as in alignment with the axis of the regulator, leading into the high pressure chamber, 2, and to this passage a suitable fitting, in the form of a coupling member or ground 'oint, 17, is connected for the attachment 0 a pipe leading fromthe gas bottle or hi h pressure supply, and the high pressure 0 amber, 2, is connected by a passage, 18, in alignment with the axis, with the low pressure chamber, 4. There is a nozzle, 19, having an opening, 20, in alignment with the passage, 18, seated in the wall of the cavity, 15, in this instance engaging a suitable threaded socket, 21, and extending into the high ressure chamber. This nozzle has its centra opening, 20, reduced at its lower extremity at 22, and the nozzle is enclosed within a sleeve, 23, which slides freely on the nozzle and is, in turn, encircled by a helical spring, 24. This spring bears at its upper end a ainst a shoulder, 27, on the upper end of t e sleeve, and at its lower end against a button or other suitable abutment, 25, seated against the opposite or intake end of the cavity, 14. The sleeve acts as a carrier for a valve seal, 28, which is engaged by one end of a stem, 29, which extends through the openings, 1820, and engages the diaphragm, 11, with its opposite end, the diaphragm being protecte by a suitable plate, 30. The stem as shown, is reduced and shouldered near the lower end and the shoulder engages the corresponding shoulder or reduced portion, 22, in the passage, 20, to .limit the. motion of the stem. The stem is also shown as of angular cross section, while the passage is round to facilitate the flow of gas. As shown, the valve is pressed against a shoulder, 31, in the sleeve, and held by a screw plug, 32.

The end of the nozzle, as shown, forms a seat, 26, for the seal, 28. This seat may be located at any convenient point which per mits it to control the regulating passage,

18. This structure is referred to herein as a passage, having a seat and projecting into the hi h pressure chamber.

Wit in the spring cap, 8, I show a helical spring, 35, which engages a disk, 36, having a central stud, 37, to position the spring. The disk rests and bears on the diaphragm. The opposite end of the spring bears against a similar disk, 38, the position of which is adjusted by a screw, 39, the point of which engages the disk, 38, from above. This screw is in turn threaded into a screw plug, 40, which is seated in the upper end of the spring cap, 8. The screw, 39, serves to adjust the tension of the spring and its pressure on the diaphragm and in turn the pressure to which the regulator operates.

I have shown connected to the regulator a high pressure gauge, 40, and a low pressure gauge, 41. These are connected to passages, 42, leading to the high pressure chamber, and 43, leading to the low pressure chamber. There is also a suitable hose connection or nipple connected to a passage, 44, leading to the low pressure chamber, 4, by way of which gas at the regulated low pressure is delivered for consumption. As already described, the high pressure supply to the regulator is connected at coupling, 17. To pre vent closing of the delivery end of passage,

vl8, by the diaphragm, 11, I have provided radiating outlets, 46, leading from passage 18 to the low pressure chamber, 4.

Rotation of the sleeve, 23, and seal, 28, is

found to interfere with uniformity of regulation, so I have provided keying means shown in the form of a pin, 60, parallel to the direction of the valve motion, and a 00- operating guide for the same, 61.

It is obvious that the high pressure supply passage, 16, may be-closed as by inserting a packing disk,-in the coupling, 17, as shown in dotted lines, and that the high pressure gauge connection, 42, may be utilized as a supply inlet, the gauge being otherwise convenlently placed.

Some advantages resulting from the structure are the location of the regulating seat on the pressure side of there ulator; the regulation of delivery pressure y means of a sealing member engaging the seat from the pressure side; the telescopic member carrying the sealing member, so arranged that it is conveniently disengaged from the sleeve I and changed; the convenient arrangement of the spring for actuating the sleeve and valve member; the construction of the stem so that, while it is free of both the diaphragm and the valve disk, it is not released from the nozzle when the sleeve and valve disk are removed.

The regulator as disclosed is simple as to its construction and convenient as to the manner of assembling, as well asvery easilyaccessible as to all its parts. The nozzle makes a very convenient guide for the valve disk, which is carried by the sleeve and cannot, as arranged, be readily distorted or cramped so as to resist seating, also the valve disk can be easily removed and changed when worn. The seating spring affords sufficient tension to insure the closing of the valve against the seat or nozzle, arresting the passage of gas through the regulator, when the desired pressure has been built up in the low pressure chamber. A further advantage is that the valve working in the direction of the gas pressure instead of against it, facilitates the sealing of the high pressure supply and assists regulation. The use of the independent stem greatly simplifies assembling of the device.

The arrangement of the entire structure, whereby all the parts may be withdrawn and the" valve entirely disassembled for inspection and reassembled almost instantaneously, is an important improvement over prior structures.

To disassemble the mechanism in the high pressure chamber, the members, 6 and 7, are separated by unscrewing at the threaded connection, 47, when the spring, 24, and the sleeve, 23, are easily withdrawn, the latter carryin the valve disk, which may be re-- moved y unscrewing the plug, 32. The valve stem, 29, is retained in position on account of the reduced lower extremity of the nozzle, and the reduced lower end of the stem, and the consequent shoulder on the stem, which cooperates therewith as described. i

To remove the diaphragm, and the valve stem, 29, .with the spring and cooperating parts, the screws, 13, are withdrawn and the cap, 8, removed. To reassemble them, the disk, 38, is placed in the cap; the disk, 36, and the spring are inserted in the order shown, the diaphragm having been placed on either of the cooperating members, the cap, 8, or the middle section, 7 the screw holes being in registration; thecap is laced in position and the screws tightened, t 1e pin or stem, 29, having been first inserted.

The manner of operation is apparent. The spring, 24, closes the passage, 20, by pressing the sleeve, 23, toward the base of the nozzle, and bringing the valve disk, 28, in contact with the intake end of the nozzle or seat. The spring, 35, which is adjustable as to its tension, bears against the diaphragm, tending to balance the delivery or regulating pressure, which acts on the opposite side of the diaphragm in op osition to the spring. Adjusting the spring y means of the screw, 39, regulates the delivery pressure. As the latter, i. e., the delivery pressure, is reduced, the resistance to the action of the s ring, 35, being likewise reduced, the equili riumat "creases the opening at the nozzle,

aaaacev the diaphragm, is destroyed and a pressure is transmitted to the stem, 29, which pressure bei suficient to overcome the tension of the va ve closing spring, 24, opensor incausmg an increased supply of gas to the low pressure chamber, and hence to the gas pressure side of the diaphragm, restoring the equilibrium.

A modified form of high pressure regulator is shown in Figures 4 and 5. In the structure shown, particularly in Figure 2, the stem, 29, is free of both the diaphragm and the valve disk and is loosely seated in the passage, 18-,20, so that it merely transmits thrust from the diaphragm to the valve disk, tending to open the valve, and when the thrust is released, permittin'g'it to close.

In Figure tthe structure is modified by connecting the valve stem to the diaphra m and to the valve disk, so that the valve disk is actuated by the diaphragm, being drawn up'against'the seal as the e regulation. This makes it possible to omit the sleeve, 23, with its actuating spring, 24, and the abutment, 25, giving the structure the greatest simplicity, but the structure shown in Figure 1 has the advantage incident to the lack of any means whereby the valve is drawn to its seat by the diaphragm, in that no matter how great the delivery )ressure, the contacting portions of the valve disk and seat are not distorted and the connecting parts are not strained, and there is no consequent tendency to loss of accuracy.

I have thus described an apparatus embodying myinvention and the operation of the same, specificall and in detail, in order that the manner 0 device may be fully understood; however, the specific terms herein are used descriptively rather than in a limiting sense, the sco e of the invention being defined in the cla ms.

What I claim and desire to ters Patent is: y

1. In a'fluid pressure regulator, having high pressure and low pressure spaces, a passage with a seat, connecting said high pressure and low pressure spaces and proiecting into the high pressure space; a sealing member co-operating with said seat; a carrier sliding on said projection and carrying said seal seated therein; a. movable secure byIietmember acting in response to vanations of p,

regulated pressure, actuating said :4. ing it to leave the seat in response to ward fluctuations of the regulated pressure.

2. In a fluid pure regulator, having high and low pressure spaces, a passage with a seat. connecting the high and low pres-' sures; a sliding, guiding member in the high pressure space, with a seal within the guiding member and carried thereby co-operating with the seat; and means actuated by causlivery or regu latmg pressure reaches the desired point of making and using the down- I variations of the re lated presure to move said guide and sea, seating and unseating said seal, and efiecting regulation.

3. In a fluid pressure regulator, a assage with a seat, projecting into the big pressure chamber; a sliding carrier enclosing and sliding on said projectionand a sealiw 1 member co-operating with said seat mount a in said carrier. I

4. In a fluid pressure regulator, a. regulating seat and a seal co-operating therewith; a movi carriage in the high pressure space, the sea being mounted 1n the carriage; and means for riage to lift the seal from the seat in response to variations of the pressure being said seal and effecting regulation. 5. In a fluid pressure regulator, a regulatmg passage with a seat; a sealin member co-operating with said seat and opening against high, pressure; and a telescopic moving carrier for said sealing. member which member is within said carrier.

6. In a fluid pressure regulator, having a high pressure and a low pressure chamber, a passage connecting the high pressure and low pressure chambers, and having a amt, disposed toward the high pressure chamher; a valve member co-operating with said seat and closing in the direction of pressure; the low pressure chamber having a movable wall actuated by the regulated pressure;-and a. pin extending through the passage engaging said movable wall and said valvefor transmittin the motion of said Wall to the valve, ten ing to thrust it from its seat in response to downward fluctuations of regulated pressure, a sliding carriage in the high pressure space in which the seal is enclosed, said carriage moving with and carrying the seal.

7. In a fluid pressure regulator, a high pressure receiving chamber, a low pressure regulating chamber, a passage connecting the two chambers: a nozzle continuous with said passage, projecting into the high pressure chamber; a sleeve member encircling said nozzle and sliding thereon; a seal carried by the sleeve to close the opening; a spring actuating the sleeve member to press the seal against the seat; a movable member actuated by variations of the regulated pressure, extending into the passage, to lift the sea] from the seat.

8. In a fluid pressure regulator, a high pressure receiving chamber. alow pressure regulating chamber; a-passage connecting the two chambers; a nozzle continuous with said passage, projecting into the high pressure chamber: a sleeve member encircling said nozzle and sliding thereon; a seal carried by the sleeve to close the opening; a spring actuating the sleeve member to press the seal against the seat; a movable member actuated by variations of the regulated presmoving the car- 7 seal from the seat.

9. In a fluid pressure regulator, a high pressure receiving chamber, a low pressure regulating-chamber; a passage connecting the two chambers, projecting'into the high t e pressure chamber; a seat controlling same; a sleeve having a flange at one end, encircling the pro ection to sl1de thereon; a sealing member in said sleeve co-operating with said seat; a spring bearing against said flange to prem the seal against the seat; a movable member actuated by .variations of the regulated pressure; a stem extending through the passage, engaging said seal and said movable member to lift the seal from the seat.

10. In a fluid pressure regulator, having high and low pressure spaces, a passage connecting the same and projectinginto t e high pressure space; a moving carrier enclosing said projection, a sealing member in said carrier closing said passage; a stem extending through the passage from the delivery end and engaging the sealing memher and a moving wall member controlled by said sleeve to close the by the variations of regulated pressure and actuating the. stem which also directly engages the moving wall member. I

11. In a fluid pressure regulator, having a receiving hi h pressure chamber and a de livery cham r, a passage connecting said chambers and projecting into the receiving chamber; a seat in said passage; a sleeve sliding on said projection; a seal carried assage; and means tending to actuate the s eeve to press the seal against the seat.

12. In a fluid pressure regulator, a regulating passage; a seal controlling said pas sage and moving against the high pressure supply in opening; a sliding carrier for the seal in the high pressure chamber; a spring tending to hold the carrier and seal in closed osition; a moving member actuated by variations of the pressure to be regulated, communicating motion to said carrier; a sprin tendin to move said member in opposition to sa1d ressure; and means for regulating the tension of the latter spring.

13. In a fluid pressure regulator, having aregulating passage; a seal controlling said passage and opening against high pressure; a moving wall member actuated by the variations of the pressure to be regulated; a pin directly engaged and actuated by said member, enga ing the sealing disk; a spring tending to pu lthe carrier and seal in closed position; a spring acting on the moving member in opposition to the regulated pressure; and means for adjusting the tension of said spring.

14. In a fluid pressure regulator, a regulating passage; a sealing member controllin said passage; a slidin carrier for the sea and seal.

16. In a fluid ressure regulator, havin high pressure and low pressure spaces, wit a regulating passa e connecting the same, a sealing member diosing the passage and opening against high pressure; a moving member actuated by the pressure being regulated; a pin projecting through the passage into contact with the sealing means and actuated by said moving member to open the passage in response to downward fluctuations of pressure; and ke ing means to prevent rotation of the sea ing member relatively to the passage.

17. In a pressure regulator, aregulating passage projecting into the high pressure chamber a carrier slidin on said projecting portion, a sealing mem r in sa1d carrier controllin said passage, and a removable plug holding the sealing member in position in the carrier whereby the sealing member may be conveniently removed and exchanged. 18. In a fluid pressure regulator, having a regulating passage; a seal controlling said passage and o ening against hi h pressure; a moving'wal member actuate by the variations of the pressure to be regulated; a pin directly engaged and actuatedby said member, engaging the sealing disk; a spring tending to maintain the carrier and seal in closed position; a spring acting on the moving member in 0 position to the regulated pressure; means or adjusting the tension of said spring, said pin extending through the regulating passage and being of angular cross-section to provide for a free movement of the fluid through said passage.

19. In a fluid ressure regulator, a regulating passage with a seat; a sealing member co-o crating with said seat and opening against igh pressure, a telescopic moving carrier for said sealing member which member is within said carrier, a pin of angular cross-section extending through said passage to actuate said sealing member and a moving wall actuated by the variation of fluid pressure, and co-operating with said' 20. In a fluid pressure. regulator, a passage with a seat, projecting into the high pressure chamber; a sliding carrier enclosing and sliding on said projection; a sealing Signed by me at Baltimore, Maryland member co-operating with said seat mounte this 6th day of April, 1920. in said carrier, a moving member actuated by the variations of pressure, a flat sided pin ALEXANDER FREDERICK JENKINS 6 extending throu h said passage actuated by Witnesses:

the moving mem er and actuating said seal- B. SGHROETER,

ing member. A. W. CARR. 

